sw_span can now hold x/y arrays of fragment positions - getting ready to

ditch the pb (pixel buffer) code.
Converted point drawing, bitmaps and aa lines to use new span functions.

1 files changed, 95 insertions, 7 deletions

diff --git a/src/mesa/swrast/s_masking.c b/src/mesa/swrast/s_masking.c
index b4433b2bc74..968a2b914a9 100644
--- a/src/mesa/swrast/s_masking.c
+++ b/src/mesa/swrast/s_masking.c
@@ -1,10 +1,10 @@
-/* $Id: s_masking.c,v 1.5 2001/03/19 02:25:36 keithw Exp $ */
+/* $Id: s_masking.c,v 1.6 2002/02/02 17:24:11 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -41,12 +41,65 @@
 #include "s_span.h"
 
 
+
+void
+_mesa_mask_rgba_span( GLcontext *ctx, const struct sw_span *span,
+                     GLchan rgba[][4] )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   GLchan dest[MAX_WIDTH][4];
+#if CHAN_BITS == 8
+   GLuint srcMask = *((GLuint*)ctx->Color.ColorMask);
+   GLuint dstMask = ~srcMask;
+   GLuint *rgba32 = (GLuint *) rgba;
+   GLuint *dest32 = (GLuint *) dest;
+#else
+   const GLboolean rMask = ctx->Color.ColorMask[RCOMP];
+   const GLboolean gMask = ctx->Color.ColorMask[GCOMP];
+   const GLboolean bMask = ctx->Color.ColorMask[BCOMP];
+   const GLboolean aMask = ctx->Color.ColorMask[ACOMP];
+#endif
+   const GLuint n = span->end;
+   GLuint i;
+
+   ASSERT(n < MAX_WIDTH);
+   ASSERT(span->arrayMask & SPAN_RGBA);
+
+   if (span->arrayMask & SPAN_XY) {
+      (*swrast->Driver.ReadRGBAPixels)(ctx, n, span->xArray, span->yArray,
+                                       dest, span->mask);
+      if (SWRAST_CONTEXT(ctx)->_RasterMask & ALPHABUF_BIT) {
+         _mesa_read_alpha_pixels(ctx, n, span->xArray, span->yArray,
+                                 dest, span->mask );
+      }
+   }
+   else {
+      _mesa_read_rgba_span(ctx, ctx->DrawBuffer, n, span->x, span->y, dest);
+   }
+
+#if CHAN_BITS == 8
+   for (i = 0; i < n; i++) {
+      rgba32[i] = (rgba32[i] & srcMask) | (dest32[i] & dstMask);
+   }
+#else
+   for (i = 0; i < n; i++) {
+      if (!rMask)  rgba[i][RCOMP] = dest[i][RCOMP];
+      if (!gMask)  rgba[i][GCOMP] = dest[i][GCOMP];
+      if (!bMask)  rgba[i][BCOMP] = dest[i][BCOMP];
+      if (!aMask)  rgba[i][ACOMP] = dest[i][ACOMP];
+   }
+#endif
+}
+
+
+
+
 /*
  * Apply glColorMask to a span of RGBA pixels.
  */
 void
-_mesa_mask_rgba_span( GLcontext *ctx,
-                      GLuint n, GLint x, GLint y, GLchan rgba[][4] )
+_mesa_mask_rgba_array( GLcontext *ctx,
+                       GLuint n, GLint x, GLint y, GLchan rgba[][4] )
 {
    GLchan dest[MAX_WIDTH][4];
    GLuint i;
@@ -135,12 +188,46 @@ _mesa_mask_rgba_pixels( GLcontext *ctx,
 
 
 
+void
+_mesa_mask_index_span( GLcontext *ctx, const struct sw_span *span,
+                       GLuint index[] )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   const GLuint msrc = ctx->Color.IndexMask;
+   const GLuint mdest = ~msrc;
+   GLuint fbindexes[MAX_WIDTH];
+   GLuint i;
+
+   ASSERT(span->arrayMask & SPAN_INDEX);
+   ASSERT(span->end < MAX_WIDTH);
+
+   if (span->arrayMask & SPAN_XY) {
+
+      (*swrast->Driver.ReadCI32Pixels)(ctx, span->end, span->xArray,
+                                       span->yArray, fbindexes, span->mask);
+
+      for (i = 0; i < span->end; i++) {
+         index[i] = (index[i] & msrc) | (fbindexes[i] & mdest);
+      }
+   }
+   else {
+      _mesa_read_index_span(ctx, ctx->DrawBuffer, span->end, span->x, span->y,
+                            fbindexes );
+
+      for (i = 0; i < span->end; i++) {
+         index[i] = (index[i] & msrc) | (fbindexes[i] & mdest);
+      }
+   }
+}
+
+
+
 /*
  * Apply glIndexMask to a span of CI pixels.
  */
 void
-_mesa_mask_index_span( GLcontext *ctx,
-                       GLuint n, GLint x, GLint y, GLuint index[] )
+_mesa_mask_index_array( GLcontext *ctx,
+                        GLuint n, GLint x, GLint y, GLuint index[] )
 {
    GLuint i;
    GLuint fbindexes[MAX_WIDTH];
@@ -180,3 +267,4 @@ _mesa_mask_index_pixels( GLcontext *ctx,
       index[i] = (index[i] & msrc) | (fbindexes[i] & mdest);
    }
 }
+